Question

Suppose that the two inner electrons (the He core) for Lithium each have a 1s wavefunction. In the absence of nuclear screening by the other electron, Z for each core electron would be 3 in this wavefunction; however, in a simple treatment of screening, Z would be replaced by an effective nuclear charge Z' , which would be less than 3.

Find the electric potential due to these two core electrons in terms of Z'

Answer 1